Finding the Fourth Proportional to 117,310.80, 161,982.10 and 108,355.08
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Solution
The fourth proportional to 117,310.80, 161,982.10 and 108,355.08 is: 149,616.09
Step by Step Solution
- Step 1: Write the proportion equation
117,310.80 : 161,982.10 = 108,355.08 : x - Step 2: Convert to fraction form
117,310.80/161,982.10 = 108,355.08/x - Step 3: Cross multiply
117,310.80x = 161,982.10 × 108,355.08 - Step 4: Simplify right side
117,310.80x = 17,551,583,404.07 - Step 5: Solve for x
x = 17,551,583,404.07/117,310.80 - Step 6: Final answer
x = 149,616.09
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.